Instructables

Need help for Oscilloscope-like device

hey, Im a noob to instructibles, but was wondering if anyone could tell me how I could get a TV or CRT, LCD, or OLED, to display a Sine wave, I want it to look like an oscilloscope but I dO NOT need a functioning scope, just want a display with the cool graphic for prop/filming purposes. It would be really helpful if it could just be a circuit which outputs an NTSC signal that is a sine wave, thanks in advance inventors of the world! Ultimately I would like to have a scope-like display that responds in appearance like a VU meter where you can see the sound as a voice waveform based on volume/pitch etc.

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Aleator777 (author) 6 years ago
Thanks for all the input guys, now I know where to start and Im sure I can get this done!
Kiteman6 years ago
If it's just a prop, why not use a computer screen showing an animated gif like this?
Get a cheap DVD, a recylcling Depot will usally have hundreds, most just need a good lens cleaning, or buy a cheap one at a big box store... Take Kitemans GIF image and burn it to a disk, pop it in the player and you'll have a scope picture, and if you want other cool looking images, just look on the web and burn them to the disk.... If your good you could also use a remote to change the images, this might take some careful placement of the DVD player, or you could remove and mount the IR receiver in the front of your Prop... Flashing leds look neat as well....
gmoon6 years ago
Ultimately I would like to have a scope-like display that responds in appearance like a VU meter where you can see the sound as a voice waveform based on volume/pitch etc.

So I guess you do need a functional 'scope, to some extent?

How 'bout a software-based sound card oscilloscope, like the Zelscope?

Or program a simulation in BASIC on an old 8-bit computer; one that uses a TV out...
NachoMahma6 years ago
. Try searching for something like "function generator" +sine